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The probability that a mechanic making a...

The probability that a mechanic making an error while using a machine on the nth day is given by `P (E_n) = (1)/(2^n)` If he has operated the machine for 4 days, the probability that he had not made a mistake on 3 of 4 days is

A

`1/2`

B

`1/4`

C

`243/512`

D

`343/1024`

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C
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TS EAMCET PREVIOUS YEAR PAPERS-TS EAMCET ENGINEERING ENTRANCE EXAM QUESTION PAPER (2018)-MATHEMATICS
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